Tool-holder.



D. HOWARD.

TOOL HOLDER.

APPLICATION FILED APB.1 9, 1912.

Patented Apr. 29, 1913.

[NVENTOR Lu Q P d Atlomeys W1 TNESSES TOOL-HOLDER.

income.

"' :1 F KENOSHA, WISCONSIN.

Specification of Letters Patent.

Patented Apr. as, rare Application filed April 19, 1912. Serial No. 691,876. I

' To all whom it may concern:

angle to various cutting Be it known that I, DANIEL. HOWARD, a subject of the King of England, residing at Kenosha, in the county vof Kenosha and State of Wisconsin, have invented certain new and useful Improvements in .Tool-llold-v ers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which itappertains to make and use the same,

This invention relates to tool holders and more particularly totool holders adapted-to hold tools such as th'read cutters.

An object of the invention is to provide a tool holder which may be adjusted at any roperly position the cutter and which wil resiliently retain the tool in proper engagement with the work.

Another object is to provide a tool holder.

of this character which may be readily (3011'.

nected to the tool holder post of an ordinary lathe which will properly serve to hold tools in proper engagement against the work and at the proper angle in relation to the work.

Other objects and advantages will be hereinafter more clearly set forth in the specification and claims.-

In the accompanying drawings whichform a part of this application, Figure 1 is a to plan view of the device, showing the cutting tool carried thereby engaged against a rod for cutting threads thereon. Fig. 2 is a side elevational view of the holder with the tool carried thereby, Fig. 3 is a front elevational view, at right angles to Fig.2. Fig. 4; is across sectional view on line t -4:

I of Fig. 2. Fig. 5 is a plan view of the I holder post in the usual The sides of the shankl spring washer for the tool. Fig. 6 is a side view of the same, and, Fig. 7 is a sectional view taken on the line 7-7 of Fig. 3.

Referring more particularly to the drawings in which similar reference characters designate corresponding parts throughout the several views, 1 represents the shank which is adapted to be secured in the tool manner. The shank 1, however, is provided in its forward end with a vertically extending circular opening 2 and with a longitudinal slot 3 extending rearwardly therefrom, said slot 3 being continued from the upper to the lower ends of the shank. A bolt 4 is passed transversely through the shank 1 at its slotted1r portion.

'= awn to ward one another by tightening the nut 5 and the bolt 4. .The purpose of drawing the sides of the shank 1 toward one another is w to tighten the same around the long depending leg 6 of the adjustable U-shaped member '7, said long depending leg '6 being positioned in the circular-opening 2' inthe forward end of the shank 1.

The end of the short dependin leg 8015 the U-shaped member 7 is enlarge and pro vided with a circular opening therethrough, as shown at 9 to receive therethrough the stem 10 of the blade holder 11, it being understood that the blade holder 1.1'is"positioned upon the forward end of the stem 10 while the rear end, of the stem -is-threadedto receive the nut 12between the legsG and 8. It will be understood that suitable wash ers 5 and 12'. are placed beneathithe'nuts 5 and 12 respectively;- I 7 The leg 8 of the member 7, is provided with a seat 13 at the forward end of the openin 9 to.accommodate thespring washer 14, against which washer 14: bears the blade holder 11. The spring washer 14 is provided atv "diametrically opposite points with flat lugs 15upon one'face. washer is slightly bulged upwardly between the lugs 15,'as shown at 16 by being pressed upwardly from the oppositesida This face of the The blade holder 11 is provided a dove-tailed groove, as shown at 17 to receive and properly hold the blade 18., The blade holder 11 is extended in opposite directions from the stem 10 andprovidedwith suitable openings 11' through which the lugs 15 mayproject to engage 18. It will thus be seen of the nut 12 upon the stem 10, the spring washer 14 will be pressed tightly against its seat 13, flattening the spring washer and forcing the lugs 15 carried thereby through the openings provided for said lugs and causing the lugs to press tightly against the back of the blade 18 and prevent movement of the latter in the dovertailed groove 17, the lugs 15 also serving to lock the washer 14 against rotation independently of the stem 10 and blade holder 11.

I In Fig. 1 the device is shown with the blade 18 en aged against a rod 19 upon which rod t e blade has cut threads for some distance from one end. It will be clearly seen, however, that the stem-10 may be rotated in the circular opening 9 in the end of the short leg 8 of the member 7 after the back of the blade that upon tightening loosening the nut 12 -to place the cutting blade 18 in proper position to give the desired slant to the groove being cut or to vary the number oft-breads to the inch when the blade 18 is used for cutting threads. The adjustable U-shaped member 7 may be readily swung to various positions or raised or lowered as desired and held in proper positionv by tightening the nut 5 upon the bolt 4, to retain the blade 18 at the proper angle to the work.

It will thus be seen that I have provided a tool holder which is adapted to hold a tool .such a cutting blade in proper position against the'work. It will further be apparent that as this tool holder has a double adjustment, the tool carried thereby may be adjusted to any suitable angle to properly perform its duties. Further, owing to the construction of the spring washer 14, the blade '18 will be securely but resiliently held in engagement with the work, as will be clearly apparent to those familiar with devices of this character.

What I claim is:

l. A tool holder comprising a shank, a U-shaped member having a leg thereof adjustably secured in said shank and having with an opening, a blade holder having a stem adjustably secured within the opening, a blade in said holder, and a spring washer disposed on said stem between said U-shaped member and blade holder, said washer being bulged at diametrically opposite points and provided with lugs at points between said bulged portion adapted to engage and lock said blade within the holder simultaneously .with the securing of said blade holder upon said'U-shaped member.

In testimony whereof I have signed my name to this specification in the presence of two. subscribing witnesses. e

DANIEL HOWARD.

Witnesses:

BELLE .B. FRANTZ, LAURA BAIN. 

